Water-heating apparatus.



G. H. GIBSON. WATER HEATING APPARATUS. APPLICATION FILED S EPT. 4, 1909.

Patented Aug". 27

2 BEETS-S HEEl' 1 ATTORNEY G. H. GIBSON.- WATER HEATING APPARATUS.APPLIOATION rum-$31 12 1909.

Patented Aug. 27, 1912.

2 SHEETS-SHEET 2.

ATENT @FhllQE.

GEORGE H.-GIBSQN, O35 MDNTGLAIR, NEW JERSEY, ILSSIGNOR TO HARRISONSAFETY BOILER WORKS, 011 PHILADELPHIA, PENNSYLVANIA, A COPARTNERSHIP.

WATER-HEATING APPARATU- To all whom 2'25 may concern:

.for both washing and filling Be it known that I, GEORGE H. GIBSON, acitizen of the United States, residing at Montclair, in the county ofEssex and State of New Jersey, have. invented certain new and usefulImprovements in Tater-Heating Apparatus and Methods of Operating theSame, of which the following a specification.

This invention is directed to the provision of an improvedv storm ofapparatus for sup so that 1& mum time will be required to puta/locomotive in condition for service. This water, however, is too hotfor use by the workmen in washing the boiler of'a l'ocoinotive to removescale therefrom, but the ovate! for washing should be heated somewhat,as the boiler cannot be readily washed witi cold water. With theapparatus con structed in accordance with my invention,

the supply of hot water for filling a loco- .niotive is maintained andwhen desired water-at the proper temperature for Washing may also beobtained.

The invention involves the provision of a water-heater. for heatingwater to a temperature of approximately 212 Fahrenheit and deviceswhereby heat may be exchanged from this body (if Water to another bodyof water in order to bring. the latter body of water to the temperaturedesired for washing; that is, about 130 Fahrenheit. The means by whichthe exchange of heat is effected may be. such that cold water raised tothe temperature for washing by the change of heat to it from. the hotwater, or cold water may be employed for reducing the temperature ofwater drawn from the hot water supply to the-temperature desired forwashing water. A supply of Ht-l]lng 'tltI' is thus provided, and thisetl'ected iii an economical manner.

I have illustrated an embodiment of my supply of water to theSpecification of Letters rarest. P t nt d A 2 191 Application filedSeptember 4, 1909.

Serial No. 516,204.

invention in the accompanying-drawings, in wh1ch- Figure 1 shows theapparatus employed is illustrated at 1,,this being of the usual in anysuitable construction. This heater consists of a water-chamber havingone or more sense of trays 2, over which the water admitted to the tankmay fall while steam entering the tank through the steam-pipe 3 ispassing upwardly through the trays.

Most of the steam is condensed by its contact with the water fallingover the trays, and it imparts its heat to the water so that the watercollecting in the bottom of tank 1 is heated by the steam to atemperature approaching 212 Fahrenheit. The steam which is not condensedby the water passes to the atmosphere through an exhaust-pipe 4, thispipe being preferably provided with a pressure-relief-valve 5. Water isadmitted to the top of the tank 1 by a pipe 6, this tank beingcontrolled by avalve 7 in the pipe 6, operated by a float 8 in thetank 1. In combination with this heater-,1 employ a device 9, having theform of a closed heater. This consists of a cylindrical casing havingheaders 10 and ll mounted therein, one adjacent to each end of the tank,and a plurality of pipes 12 extending between these headers andcommunicating with the chambers between the headers and the ends of thetank. This tank 9 serves as a heat-exchanger, as within it, heat unitsin one body of water are transmitted into'another body of water. A pipe13 leads from the heaterv 1 to the portion of the heat-exchanger 9between the headers 10 and 11, and a pipe let leads from this portion ofthe heat-exchanger,preferably at the opposite end thereof. Acold watersupply' pipe is shown at 24, this beingconnected to the chamber betweenvthe header l1 and the adjacent end of the heat-exchanger at the bottomof this chamber. A pipe 15 leads iromthe top of the chamber between theheader 10 and the adjacent end of the heat" exchanger 9, and isconnected with the pipe (5 leading to the top of the heater 1. A pipe 16fOl'lllS a by-pass around the heat-ex loo changer 9, this beingconneotml to the pipes ll and I5 as slmwn. In the pipe. 16 is a valve17, operated by a thermostat 18, the

end of which projects into the pipe 14:.

Preferably bafiles 19 and 20 are provided and the latter extending fromthe header I in the, opposite direction. Also "baflies 21 and 22 areprovided in the chambers at the ends of the heat-exchanger, the formerbeing in line with the baffle 19 and the latter inline with the baffle20.-

With the apparatus thus constructed, the operation is as follows :'Coldwater is admitted to the heater 1 through the pipes 2 1, 16, 15 and6,and steam is admitted to the heater through the pipe 3, this steam beingdrawn from any suitable source, as, for instance,'theexhaust fromstationary engines, I

and, if desired, the steam blown off from a locomotive in emptying-theboiler thereof.

The water passing down over the trays 2 while the steam is passingupwardly through these trays becomes heated and collects at the bottomof the heater 1, this water rising toca level within the heaterpermitted by the float-operated valve 7. The water in the tank 1 is thusmaintained at a temperature of 212 Fahrenheit. When it is desired tofill the boiler of a locomotive, this heated Water is drawn from thetank 1 through a pipe 23 connected withthe pipe 13, a pump beingpreferably provided in the pipe 23 for forcing the water to the boiler.The water which passes through the heat-exchanger 9between the headers10 and 11 is reduced to the temperature desired for the washing water.When the water fallsbelow this temperature, the thermostat 18 operatesto open the valve 17, so as to allow a portion or all 'of the cold watersupplied to the heater 1 to pass to the heater'in the manner abovedescribed; that is, through the pipe 16 constituting a by-pass aroundthe exchanger. If-the temperature of the washing water passing throughthe exchanger'between the headers 10 and 11 rises above the temperaturedesired for the'washing water, the thermostat 18 closes the valve 17,sothat thewater supplied to the heater 1 passes from the supply-pipe 2stthroughthe chambers at the ends of the heat-exchanger and the pipes 12to the pipe 15 and then to the pipe 6 and heater 1. This cold waterpassing through the tubes 12 of the heat-exchanger is heated by-theexchange of heat units from thehot water which surrounds the tubes 12,and'by th us abstracting heat units from this water surroundin the.tubes 12 the temperature of the latter is reduced to that desired forthe washing water to be drawn from the exchanger through the pipe 14. Itwill thus be seen that an automatic regulation of the temperature of thewashing water'is effected by passing cold water through pipes surroundedby of the heat from this washing water; and

whehever the washing water within the heat-exchanger 9. is at or belowthe desired temperature, the valve 17 is automatically opened by the,thermostat .18, so that the cold instead of through, the heat-exchanger.The baflles 19,120, 21 and 22. are so arranged that the warmer portionof the cold water water admitted to the heater passes around,

leaves the heat-exchanger at a point-close! to that at which the hotterportion of. the hot water is admitted to the exchanger; that is, thecold water enters the exchanger at the bottom of the chamber'between theheader 11 and the adjacent end of the heat exchanger, flows through thelower section of tubes 12 to the chamber at the opposite end of theexchanger, then back throu h the tubes I bove the battle 19, and then int e opposite direction through the tubes above the Dafile 20, so thatthe water passing from'the heat-exchangerinto the pipe 15 is the waterwhich has been warmed somewhat by the exchange of heat from the watersurrounding the tubes 12; and the hot w'ateris admitted to the sectionof the heat-ex changer above the baflie ,20, flows in one iii rectionaround that bafile, then in the oppositedirection in ordertto passaround the baffle 19, and thenout through the pipe 14, sothat it is thehot-water which has had its temperature reduced which flows out of theexchanger through the pipe 14 at a point adjacent to that at which thecold water is first admitted to the exchanger.

The heat-exchanger 9 would of course be constructed to facilitate theexchange of would preferably be made of copper and would be onlyofisufiicient thickness to give them the requisite mechanical strength.

. In order to aid in keeping the water within tank 1 at or near thedesired temperature 212 F., I prefer to provide a circulating systemwhereby water is drawn from thebottom of tank 1 and carried to the topthereof so that it will pass down over the trays 2 and be againsubjected to the heating effect of steam entering through pipe 3.

Such a circulating system is shown as a pump 25 connected to the bottomof tank 1 by a pipe 26 and to the pipe 6 by a pipe 27. With theapparatus herein illustrated operating as above described, a supply offilling water is atall times maintained, heated by such exhaust steamas-may be available;

when washihg water is required, the temperature of h portion of thisfilling water is reduced so as to bring it to the temperature desiredfor the Washing water; this reduction of temperature is effected bytransferheat units from one body of'water to the other therein; to thisend, the tubes 12 menses of cold water to that. desired for Washingwater, using for this purpose the filling Water. To operate in thismanner, cold water would be admitted to the space around the tubes 12Within the exchanger. and drawn oil" through the pipe 14 when requiredfor washing; and'filling Water from; tank 1 would be carried through thetubes- 12 so as that b the transfer of heat units it would raise t etemperature of this cold Water-to about 130 F.- Preferably the tubes '12wouldtbe arranged for insertion in the circulating system for the heater1 by run-; ning the pipe 27 from the pump 25 to the pipe. 24,; then hotwater from the heater 1 would be passed through tubes 12 when require-lfor heating the Water around thosetubes and when not so required thevalve 17 .would be operated automatically by the thermostat '18 to openthe bypass around the exchanger through the pipe 16.

Fig. 2 illustrates apparatus similar in many respects to thatillustrated in Fig. 1

and above described, this involving the use of a 'heabexchanger 9.However, instead of providing a single device in which water is heatedand stored, two devices are employed each provided with means foremploying steam to heat the Water therein and one of which may draw itssupply of Water from the other or from the cOld Water supply pipe. Thecold Water supply-pipe is shown at 24 this leading to the heat-exchanger9 and a pipe 15 carries this water from the exchanger. A tank is shownat 30 having a pipe 31 running along the side thereof and near thebottom a plurality of devices for making connectionfrom the pipe 31 tothe interior oi": the tank 30. The pipe 31 a1 ranged for connection tothe boiler of the locomotive so that steam blown off from the locomotivein emptying it will pass through the connections to the interior of thetank 30; this steam rising in thetank 30 will be condensed by the Waterand will impart its heat to the Water. A bypass for the cold wateraround the heat-exchanger 9 is shown at 33 and in this by-pass is avalve 3% op erated by a diaphragm Within a casing 35 in direct responseto changes of pressure within the tank 30. The tank is provided with anexhaust pipe 35 having a pressure relief valve therein. A second storagetank is shown at 36, this preferably having the form of a feed-Waterheater. The heater may be of any suitable type but as it is here shownit is provided with a plurality of trays 37 over which the water passesso as to take up the heat of the steam rising within the heater. Exhauststeam from any suitable source, as for instance, the exhaust fromstationary engines about the plant, enters the heater 36 through thepipe a separator being provided at 39 in the usual manner. "Water issupplied to the heater from the tank 30 through a pipe t6 and in thispipe is valve 41 controlled by a float 42 within the heater 36. Watermay also be supplied to the heater 36 from the cold Water supply-pipe242 through a pipe and in this pipe is a valve 44 operated by means ofthe float 45 in the heater 36, the float as being a substantial distancebelow the float 412, as shown in the drawings. In order to I insure theproperheating of the Water admitted to the tank 36, in case the supplyof exhaust steam through the pipe 38 is insuflicient for this purpose Iprovidela pipe 46 for the heater 36 to carry live steam to the heaterfrom a suitable source, this pipe hav- 111g a pressure-reducing valve t7therein so that the passage-way for the steam through pipe 46 will beopened only when an in suflicient supply of steam is carried to theheat-er 36 by the pipe 38. The heater 36 is provided with a suitableoverflow opening 48, leading to Waste. The hot Water is drawn from thewater-chamber at the bottom of the heater 36 through a pipe .13 by meansof a suitable pump to which this pipe connected and connection is madetrom the pipe 13 to the portion of the heat-exchanger between theheaders 16 and 11 as above described. The thermostatically'operatedvalve controlled by the temperature ofthe Washing water drawn from theheatexchanger through the pipe 14: is, in the construction shown in Fig.located in watersupply pipe 2% as indicated at 49 instead of beinglocated in the bypass for the cold Water around the exchanger as in theapparatus shown in Fig. 1, this valve. being placed between the heatexchanger and the points of connection of the pipes 33 and d3 to thesupply-pipe 24. In the tank 30 is a float 51 arranged to operate a valve50 inv the pipe 36.

.ln operating with the apparatus shown in passes admission of steam tothe tank and a lowering of the water level within the tank. VVhen steamis blown off from the locomothrough the pipe 31 and openings 32 andrises through the water in the tank 30 impartin its. heat to this Waterso that the heat units in the blow-oil steam are utilized in raising thetemperature of water which is oafterward to be used in washing andfilling. Whenever the level of the water withintank 36 falls low enoughto operate the valve 41 by float 42, this heated water is drawn fromtank 30 through the pipe 40 to the heater 36 in su'fiicient quantity toraise the level of the water in tank 36 the desired amount,

Y but' i: f there is no water wit-hin'the tank 30 due to the fact thatthe valve 34 has not been opened in response to pressure within tank 30,water will not be supplied to the heater 36 when the valve 41 is openedand, if more'water is drawn from heater 36 to such extent that the levelof the water falls low enough to operate the float 45, the valve 44 willbe opened and cold wa'ter will flow from' the supply-pipe 24 through thepipe 43 to the heater 36. Itwill thus be apparent thatjthe level of thewater within eater 36 will never fall below the level at which the float45 operates but by reason of the provision of the two floats and theircor responding valves theheater-36 will always besupplied with heatedwater from the tank 30 if there is any water in the letter tank and'onlyin case there is no water in tank 30 will cold water be supplied to theheater direct from the pipe The water in heater 36 will always bemaintained at a' temperature of 212 degrees F. for the 40 reason that ifever the supply of exhaust steam to'tl1e\heater 36 through the pipe 38is insuflicientto raise the temperature of the water enteringheater 36to this point, live steam will be admitted to the heater 36 through thepipe 4Ssince the valve 4'? will open automatic ally when the supply ofex- 1 haust steam through the pipe 38 is insufiicie-nt. Theliot waterfor filling a locoino tiveboiler may be drawn from the heater 36 throughthe pipes 13 and 23 and when water or washing a boiler is required thiswater will be drawn from the heater 36 throu'g-hfth exchanger 9 and pipe14, its temperature being reduced from 232 degrees 5.5 'F. toapproximately 130 degrees F. by reason of the exchangerof a portion ofits heat to the cold water passing through the tubes 152 Duneheat-exchtlhger.

Having now described myinvention, what I"'claim." as

Letters-Patent'is as follows: The-eombination of a water-heater, awater-supp'ly pipe connected thereto, a steam connection for supplyingsteam to the 1 6 heater to with and heatthe water suptive boiler, inemptying the latter-,it passes new therein and desire to secure plied bysaid pipe, a pipe for carrying hot water from the heater to a point ofuse, a passageway for carrying hot water from the heater, meansconnected to said passageway for transferring heat from the hot water.

flowing through the passageway to a second body ofwater without mlnglingsaid bodies of water, a pipe for conveying said second changer to theheater, means for supplying point of use, substantially as V steam tothe heater to mingle'with and heat the Water entering the heater 'fromsaid water-supply pipe, means for carrying the.

heated water from the heater to'a point-of use, and other meansforcarrying the heated water from the "heater first through thevv plied tothe exchanger hysaid waten'supp pipe without minglingthelewith' r to apoint of use, substantially asset forth,

3. The combination, of a heater, 2, heat exchanger, a water-supply pipeconnected to the exchanger, means ziOfcarrying the water exchanger tocause ittdhjeat the water supsupplied by said pipefiroin the exchangerto 1 the heater, means ionsupplying steam to the heater to mingle withand heat the water entering the heater, from said watersupply pipe,means for carrying the-heated,

water from, the heater to a point of use, other means from theheaterlirst through the exchange to cause it to heat the water suppliedto the out mingling therewith and then to a. point of use, and a by-passpipe connected to; the Water-supply pipe in 'd rying water from thwater-supply pipe to and then I I for carrying the heated waterexchanger by said water supply withto the heater: for 'carthe heaterwithout passing through the. ex-

changer, substantially as set forth.

4. The combination of a heater, a heatexchanger, a water-supply pipeconnected to the exchanger, means for carrying the water supplied bysaid pipe fromthe exchanger to the heater, means for supplyingsteam tothe heater to mingle with and heat the water 1 entering the heater fromsaid] water-supply.

pipe, means -for carrying the-heated water means for carrying the.heated water from I from theheater to a point of use, other the heaterfirst through the .exchangervato cause it to heat thewatersupplied to'the exchanger by said v'aater' supply pipewithout mingling therewith andthen to a point of use, and a Joy-pass pipe connectedto the,

water-supplypipe and to the heaterfor carrying water from thewater-supply .pip'eztothe heater without passing through theex-.changer,"'a valve for regulating the flow of Water from said tvatersupply pipe to the heat-exchanger, and a thermostat controlling saidvalve.

5. The combination of a Water-heater, a ater-supply connected thereto, asteam connection for supplying steam to the heater to heat the Water, apassageway for carrying the heated Water from the heater, means fortransferring heat from said water to another body of WaterWithoutmingling said bodies of Water, a pipe for conveymg one ofsaidbodies of Water ifrom said means to the heater, a pipe connected to saidmeans for conveying the other of said bodies of Water, a pipe forming abypass around said means for the water 0011-,

eyed by one of said pipes, a valve for regulatingthe flow of one of saidbodies of water in said means, and a thermostat controlling said vali'e,substantially as set forth,

6. The combination of an 1 open heater, :1- closed heater, aWater-supply pipe carrying Water to the closed heater and thence to theopen heater, means for supplying steam to the open heater to mingle withand heat the Water entering the open heater from said Water-supply pipe,means for carrying hot water from the open heater to the point of theWater entering the open heater from said Water-supply pipe, means forcarrying I hot water from the open heater to the point of use, and othermeans for carrying hot Water from the "open heater through the closed.heater Without mingling with. the

Water entering the closed heater from the water supply pipe and then tothe point of use, and a by-pass pipe for carrying water fromv theWater-supply pipe to the open heat-er Without passing through the closedheater.

8. The combination of two heaters, a heat-exchanger, a Water-supplypipe, means for admitting water to either ofsaid heaters from saidsupply pipe, means for admitting water to one of said heaterssfrom saidsup- "plypi'pe through the heat-exchanger, and

means for withdrawing Water from one of said heaters through theheat-exchanger, substantially as set forthr 9. The combination of two.heaters, a heat-exchanger, a' Water-supply pipe, means for admittingWater to either of said heaters 1 from said supply pipe, means foradmitting water to one of said heaters from said supply-pipe through theheateexchanger, means.

for withdrawing water from one of said heaters through theheat-exchanger, and means for admitting water from one of said heatersto the other, substantially as set forth.

10. The combination of two heaters, a

heat-exchanger, a water supply pipe means for admitting water to one ofsaid l1 eaters,

from said supply pipe, meansier admitting water to said heater from saidsupply pipe through the heat-exchanger, means for admitting water fromsaid-heater to the second heater-When the water in thesecond heaterfalls to a predetermined'level jtherein, means for admitting water tothe second heater from the supply pipewhenthe water in the second heaterfalls to'a lower level therein, and means for Withdrawing water from oneof said heaters through the heateschanger, substantially as set forth.

11. The combination of a heat-exchanger, a water heater, a water supply,meansdor admitting Water to the heater from the watersupply through theheat-exchanger, means for admitting, ater to the heater from said watersupply Without;- passing through the heat-exchanger, a pipe Vcarrylugexhaust steam to the heater to heat the water therein, a live steamconnection to the heater, a pressure-reducing valve in said iconnection, a float insaidheatercontrolling the supply of 'Waterthereto, and a pipe'for withdrawing Water from the heater through theheat-exchanger, substantially as set forth.

.This specification signed and witnessed this 20th day of August, 1909.

GEO. H. GIBSON. Witnesses D. S. EDMONDS,

HENRY MEYER.

